Sunflowers / Sheramy Bundrick.

Enhanced descriptions from Syndetics:

In July 1888, when Rachel Courteau first meets Vincent van Gogh in a summery garden of Arles, France, she sees what everyone else sees: a strange foreigner who paints for hours in the hot sun for no good reason. At most, she thinks he'll be just another customer to help her earn the money she needs to leave her life as a prostitute.

But with each visit Vincent makes to her brothel and she makes to his studio, Rachel finds herself drawn more deeply into the artist's world. For Vincent, too, their growing attachment brings joy and inspiration. His canvases sing with bright colors, and his yellow house becomes a safe haven from gossip and loneliness.

Until autumn comes, and Vincent and Rachel face challenges from every side: Vincent's insecurities and obsessions about his work, the likely disapproval of the van Gogh family, and Rachel's own fears that their happiness cannot last. As Vincent struggles with his painting and his inner demons, Rachel must summon the strength to stand beside him; Vincent, the courage to seek the sun even in the midst of darkness.